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Finding the Fourth Proportional to 91,906.62, 126,837.81 and 51,622.80

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Solution

The fourth proportional to 91,906.62, 126,837.81 and 51,622.80 is: 71,243.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,906.62 : 126,837.81 = 51,622.80 : x
  2. Step 2: Convert to fraction form
    91,906.62/126,837.81 = 51,622.80/x
  3. Step 3: Cross multiply
    91,906.62x = 126,837.81 × 51,622.80
  4. Step 4: Simplify right side
    91,906.62x = 6,547,722,898.07
  5. Step 5: Solve for x
    x = 6,547,722,898.07/91,906.62
  6. Step 6: Final answer
    x = 71,243.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.